PromptLens vs Braintrust
Braintrust requires SDK integration and code to run evaluations. PromptLens lets you test prompts through a web UI — no code needed, instant results.
What sets PromptLens apart
No code required
No SDK integration
Instant setup
How we stack up
A side-by-side look at PromptLens and Braintrust.
| Feature | PromptLens | Braintrust |
|---|---|---|
| No code required | ||
| No SDK integration | ||
| Instant setup | ||
| Shareable report links | Limited | |
| Multi-model comparison | ||
| Pass/fail scoring | ||
| Version tracking | ||
| Logging & tracing | ||
| Production monitoring | ||
| Custom scoring functions | ||
| Dataset management | Web UI | Code + UI |
No code required
No SDK integration
Instant setup
Shareable report links
Multi-model comparison
Pass/fail scoring
Version tracking
Logging & tracing
Production monitoring
Custom scoring functions
Dataset management
A closer look
Getting Started
How quickly can you run your first evaluation?
Sign up, paste your prompt, add test cases in the web UI, and click run. No code, no SDK, no configuration files. First evaluation in under 5 minutes.
Install the Braintrust SDK, write evaluation scripts in Python or TypeScript, configure your project, then run programmatically. Requires a developer environment.
Evaluation Workflow
How do you create and manage test suites?
Build test datasets through the web UI. Add inputs and expected outputs visually. Run evaluations with one click and see results immediately.
Define evaluations in code using the SDK. Write custom scoring functions. More flexible but requires programming knowledge for every evaluation.
Who Can Use It
Which team members can participate in prompt QA?
Anyone on the team — PMs, designers, engineers — can create test cases and review results through the web UI. Share reports via links with no account needed.
Primarily designed for developers who can write evaluation code. Non-technical team members can view results in the dashboard but can't create evaluations independently.
Frequently asked questions
Ready to switch from Braintrust?
Start testing your prompts in minutes. No credit card required, no complex setup.